docs: def __unpack_zip(self, filename):
          """Unpack the `zip` compressed file format"""
          if isinstance(filename, string_types) and self.__isValidZIP(filename) and zipfile.is_zipfile(filename):
              with zipfile.ZipFile(filename) as z:
                  for name in z.namelist():
                      z.extract(name, self.plugin_abspath)
          else:
              raise ZipError("Invalid Plugin Compressed File")